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From: | embyte |
Subject: | [Discuss-gnuradio] UHD Warning on ODD Interpolation |
Date: | Thu, 01 Aug 2013 14:16:20 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130701 Icedove/17.0.7 |
Hello list,I have a graph consisting of a modulator mixed with a signal source, and a USRP sink.
I have it configured with a *sampling rate* of 720KHz.When I run it, UHD fires the following warning (and transmission seems fine).
The requested interpolation is odd; the user should expect CIC rolloff. Select an even interpolation to ensure that a halfband filter is enabled. interpolation = dsp_rate/samp_rate -> 89 = (64.000000 MHz)/(0.719101 MHz)
What is this about? Thanks.
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